Hi .First of all thank you for approaching Lybrate
for your query. I read through your query. The discolouration of tooth from birth means it must have happened due to some reasons in growth period of teeth. It can be corrected by few ways: 1) tooth bleaching
2) full coverage teeth restoration 3) veneering
So better to go nearby dentist
and get it treated. Hope you are satisfied with the reply. Thank you and hav a healthy day.